TITLE

Different contrast mechanisms induced by topography artifacts in near-field optical microscopy

AUTHOR(S)
Gucciardi, P. G.; Colocci, M.
PUB. DATE
September 2001
SOURCE
Applied Physics Letters;9/3/2001, Vol. 79 Issue 10
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Topography artifacts can affect the elastic scattering optical images in near-field optical microscopy. Moreover, such effects can completely mask the information on the optical properties of the samples, yielding unexpectedly high lateral resolutions. In this letter, we provide experimental evidence of how changes involving the collection geometry and the roughness of the sample can lead to radical modifications of the contrast induced by the artifacts to the optical map. An explanation of the different regimes is provided by means of approach curves in which the optical signal is detected as a function of the probe/sample distance. © 2001 American Institute of Physics.
ACCESSION #
5072596

 

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